and canada ruptured, pouring at least 800,000 gallons of crude in the waterway surrounding this town. fouling the air with a noxious odor, threatening the water and, as seen in this home video, drenching local wildlife. now, that mess has turned into another one. the canadian energy giant that owns the pipeline, enbridge, is accused of deceptive tactics by dozens of homeowners affected by the spill. >> they don't know what they're signing and they sign a lot of their rights if they don't know what they're signing. >> reporter: in a giant investigation with the center for public integrity, cbs news obtained these two documents. one is this settlement form. some residents claim the company coerced them to sign it for a $300 air purifier and some evacuation expenses. in exchange releasing enbridge from and against all liability, claims and actions. the company disputes that. the other document was this release form allowing enbridge access to any and all medical records, one that had to be signed, residents claim, before enbridge would pay for a visit to a clinic. residents in this mobil